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https://issues.apache.org/jira/browse/LUCENE-3613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-3613:
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Attachment: LUCENE-3613_vectors.patch
here's a pretty trivial patch splitting the 4.x and 3.x term vectors
implementations.
I didn't do much refactoring except to remove shared docstore code from the 4.x
version.
If there are no objects I would like to commit this, then separately add
getComparator() to TermVectorsWriter, use it to sort the term vectors hash, and
fix our 3.x backwards compatibility so preflex actually handles the sort order
change in term vectors.
> remove .codecs.DefaultXXXX and split into 3x/4x impls
> -----------------------------------------------------
>
> Key: LUCENE-3613
> URL: https://issues.apache.org/jira/browse/LUCENE-3613
> Project: Lucene - Java
> Issue Type: Task
> Affects Versions: 4.0
> Reporter: Robert Muir
> Attachments: LUCENE-3613.patch, LUCENE-3613_vectors.patch
>
>
> Currently there is a lot of shared codec implementations for things like
> field infos, segment infos, stored fields, term vectors under the .codecs
> package with the name Default*
> I think actually the .codecs package should be our abstract codec apis,
> and the implementations should be under the respective codecs.
> Also, lots of these implementations are still 'shared' across the 3.x and 4.x
> formats, but shouldn't be: the 4.x versions should be "clean", and the 3.x
> versions should have all the backwards cruft.
> Additionally, the "PreFlexRW" should be writing this stuff in 3.x format,
> but today it does not (it writes a 3.x index repackaged in a 4.x "container").
> Really PreFlexRW needs to write indexes that are exactly like the 3.x format
> (if you opened them up in lucene 3.x you could read them!). When this works
> then we know that codecs will actually work for our backwards compatibility
> needs
> and we know that we have good index backwards compatibility testing.
> For starters we could just pick some 3.x version of lucene and wire PreFlexRW
> to it... in the future maybe the writer should take a version param so it
> can actually simulate different minor versions.
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